Smart Door Lock Pro Kit with Arduino & HC-05 – Bluetooth Parcel Alert & Delivery Log

Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.

Transform your front door into a smart security checkpoint that never misses a package. When a parcel lands on the doorstep weight sensor, your phone buzzes instantly with a Bluetooth notification. The onboard real-time clock captures the exact delivery time, creating a digital log you can track. It’s a practical answer to India’s booming e-commerce deliveries, where missing a parcel means hassle.

What You'll Build

You’ll assemble a discreet weight-sensing mat connected to an Arduino and HC-05 Bluetooth module. The system detects even lightweight parcels, triggers a green LED for visual confirmation, and sends an alert to your Android phone via a custom serial Bluetooth app. The DS3231 RTC stamps each event, so you can scroll back and see exactly when the courier arrived.

What You'll Learn

• Interfacing an HX711 load cell amplifier with a 5kg load cell to measure precise weight changes
• Configuring the HC-05 Bluetooth module for master-slave communication with an Android app
• Using the DS3231 real-time clock (RTC) to timestamp events with battery-backed accuracy
• Writing Arduino code that reads sensor data, decides notification thresholds, and manages I/O

Kit Contents

Why Buy This Kit Instead of Sourcing Parts Separately

Who This Kit Is For

If you’re a Class 11–12 CBSE student diving into IoT as part of a practical file, a B.Tech ECE/EEE sophomore looking for a minor project with real-world sense, or a Smart India Hackathon team building a smart home prototype — this kit fits. ATL Tinkering Lab mentors will find it a ready-made module to teach sensor fusion and wireless communication without chasing components from multiple vendors.

Built and Backed by Compoden

Every Compoden kit ships with an AI build companion trained on this exact project — accessible via a QR code on the box, with WhatsApp and email backup. We've spent 10 years building projects for makers, schools, and institutions across India. If a part fails because of a manufacturing defect, replace it free within 7 days.